/* $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $ * linux/arch/sparc64/kernel/setup.c * * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include <linux/errno.h>#include <linux/sched.h>#include <linux/kernel.h>#include <linux/mm.h>#include <linux/stddef.h>#include <linux/unistd.h>#include <linux/ptrace.h>#include <linux/slab.h>#include <asm/smp.h>#include <linux/user.h>#include <linux/a.out.h>#include <linux/screen_info.h>#include <linux/delay.h>#include <linux/fs.h>#include <linux/seq_file.h>#include <linux/syscalls.h>#include <linux/kdev_t.h>#include <linux/major.h>#include <linux/string.h>#include <linux/init.h>#include <linux/inet.h>#include <linux/console.h>#include <linux/root_dev.h>#include <linux/interrupt.h>#include <linux/cpu.h>#include <linux/initrd.h> #include <asm/system.h>#include <asm/io.h>#include <asm/processor.h>#include <asm/oplib.h>#include <asm/page.h>#include <asm/pgtable.h>#include <asm/idprom.h>#include <asm/head.h>#include <asm/starfire.h>#include <asm/mmu_context.h>#include <asm/timer.h>#include <asm/sections.h>#include <asm/setup.h>#include <asm/mmu.h> #ifdef CONFIG_IP_PNP#include <net/ipconfig.h>#endif struct screen_info screen_info = { 0, 0, /* orig-x, orig-y */ 0, /* unused */ 0, /* orig-video-page */ 0, /* orig-video-mode */ 128, /* orig-video-cols */ 0, 0, 0, /* unused, ega_bx, unused */ 54, /* orig-video-lines */ 0, /* orig-video-isVGA */ 16 /* orig-video-points */}; void (*prom_palette)(int);void (*prom_keyboard)(void); static voidprom_console_write(struct console *con, const char *s, unsigned n){ prom_write(s, n);} unsigned int boot_flags = 0;#define BOOTME_DEBUG 0x1 /* Exported for mm/init.c:paging_init. */unsigned long cmdline_memory_size = 0; static struct console prom_debug_console = { .name = "debug", .write = prom_console_write, .flags = CON_PRINTBUFFER, .index = -1,}; /* XXX Implement this at some point... */void kernel_enter_debugger(void){} /* * Process kernel command line switches that are specific to the * SPARC or that require special low-level processing. */static void __init process_switch(char c){ switch (c) { case 'd': boot_flags |= BOOTME_DEBUG; break; case 's': break; case 'h': prom_printf("boot_flags_init: Halt!\n"); prom_halt(); break; case 'p': /* Use PROM debug console. */ register_console(&prom_debug_console); break; case 'P': /* Force UltraSPARC-III P-Cache on. */ if (tlb_type != cheetah) { printk("BOOT: Ignoring P-Cache force option.\n"); break; } cheetah_pcache_forced_on = 1; add_taint(TAINT_MACHINE_CHECK); cheetah_enable_pcache(); break; default: printk("Unknown boot switch (-%c)\n", c); break; }} static void __init process_console(char *commands){ serial_console = 0; commands += 8; /* Linux-style serial */ if (!strncmp(commands, "ttyS", 4)) serial_console = simple_strtoul(commands + 4, NULL, 10) + 1; else if (!strncmp(commands, "tty", 3)) { char c = *(commands + 3); /* Solaris-style serial */ if (c == 'a' || c == 'b') { serial_console = c - 'a' + 1; prom_printf ("Using /dev/tty%c as console.\n", c); } /* else Linux-style fbcon, not serial */ }#if defined(CONFIG_PROM_CONSOLE) if (!strncmp(commands, "prom", 4)) { char *p; for (p = commands - 8; *p && *p != ' '; p++) *p = ' '; conswitchp = &prom_con; }#endif} static void __init boot_flags_init(char *commands){ while (*commands) { /* Move to the start of the next "argument". */ while (*commands && *commands == ' ') commands++; /* Process any command switches, otherwise skip it. */ if (*commands == '\0') break; if (*commands == '-') { commands++; while (*commands && *commands != ' ') process_switch(*commands++); continue; } if (!strncmp(commands, "console=", 8)) { process_console(commands); } else if (!strncmp(commands, "mem=", 4)) { /* * "mem=XXX[kKmM]" overrides the PROM-reported * memory size. */ cmdline_memory_size = simple_strtoul(commands + 4, &commands, 0); if (*commands == 'K' || *commands == 'k') { cmdline_memory_size <<= 10; commands++; } else if (*commands=='M' || *commands=='m') { cmdline_memory_size <<= 20; commands++; } } while (*commands && *commands != ' ') commands++; }} extern void panic_setup(char *, int *); extern unsigned short root_flags;extern unsigned short root_dev;extern unsigned short ram_flags;#define RAMDISK_IMAGE_START_MASK 0x07FF#define RAMDISK_PROMPT_FLAG 0x8000#define RAMDISK_LOAD_FLAG 0x4000 extern int root_mountflags; char reboot_command[COMMAND_LINE_SIZE]; static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; void __init per_cpu_patch(void){ struct cpuid_patch_entry *p; unsigned long ver; int is_jbus; if (tlb_type == spitfire && !this_is_starfire) return; is_jbus = 0; if (tlb_type != hypervisor) { __asm__ ("rdpr %%ver, %0" : "=r" (ver)); is_jbus = ((ver >> 32UL) == __JALAPENO_ID || (ver >> 32UL) == __SERRANO_ID); } p = &__cpuid_patch; while (p < &__cpuid_patch_end) { unsigned long addr = p->addr; unsigned int *insns; switch (tlb_type) { case spitfire: insns = &p->starfire[0]; break; case cheetah: case cheetah_plus: if (is_jbus) insns = &p->cheetah_jbus[0]; else insns = &p->cheetah_safari[0]; break; case hypervisor: insns = &p->sun4v[0]; break; default: prom_printf("Unknown cpu type, halting.\n"); prom_halt(); }; *(unsigned int *) (addr + 0) = insns[0]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); *(unsigned int *) (addr + 4) = insns[1]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 4)); *(unsigned int *) (addr + 8) = insns[2]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 8)); *(unsigned int *) (addr + 12) = insns[3]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 12)); p++; }} void __init sun4v_patch(void){ struct sun4v_1insn_patch_entry *p1; struct sun4v_2insn_patch_entry *p2; if (tlb_type != hypervisor) return; p1 = &__sun4v_1insn_patch; while (p1 < &__sun4v_1insn_patch_end) { unsigned long addr = p1->addr; *(unsigned int *) (addr + 0) = p1->insn; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); p1++; } p2 = &__sun4v_2insn_patch; while (p2 < &__sun4v_2insn_patch_end) { unsigned long addr = p2->addr; *(unsigned int *) (addr + 0) = p2->insns[0]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); *(unsigned int *) (addr + 4) = p2->insns[1]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 4)); p2++; }} #ifdef CONFIG_SMPvoid __init boot_cpu_id_too_large(int cpu){ prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", cpu, NR_CPUS); prom_halt();}#endif void __init setup_arch(char **cmdline_p){ /* Initialize PROM console and command line. */ *cmdline_p = prom_getbootargs(); strcpy(boot_command_line, *cmdline_p); if (tlb_type == hypervisor) printk("ARCH: SUN4V\n"); else printk("ARCH: SUN4U\n"); #ifdef CONFIG_DUMMY_CONSOLE conswitchp = &dummy_con;#elif defined(CONFIG_PROM_CONSOLE) conswitchp = &prom_con;#endif boot_flags_init(*cmdline_p); idprom_init(); if (!root_flags) root_mountflags &= ~MS_RDONLY; ROOT_DEV = old_decode_dev(root_dev);#ifdef CONFIG_BLK_DEV_RAM rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); #endif task_thread_info(&init_task)->kregs = &fake_swapper_regs; #ifdef CONFIG_IP_PNP if (!ic_set_manually) { int chosen = prom_finddevice ("/chosen"); u32 cl, sv, gw; cl = prom_getintdefault (chosen, "client-ip", 0); sv = prom_getintdefault (chosen, "server-ip", 0); gw = prom_getintdefault (chosen, "gateway-ip", 0); if (cl && sv) { ic_myaddr = cl; ic_servaddr = sv; if (gw) ic_gateway = gw;#if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) ic_proto_enabled = 0;#endif } }#endif /* Get boot processor trap_block[] setup. */ init_cur_cpu_trap(current_thread_info()); paging_init(); smp_setup_cpu_possible_map();} static int __init set_preferred_console(void){ int idev, odev; /* The user has requested a console so this is already set up. */ if (serial_console >= 0) return -EBUSY; idev = prom_query_input_device(); odev = prom_query_output_device(); if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) { serial_console = 0; } else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) { serial_console = 1; } else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) { serial_console = 2; } else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) { serial_console = 3; } else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) { /* sunhv_console_init() doesn't check the serial_console * value anyways... */ serial_console = 4; return add_preferred_console("ttyHV", 0, NULL); } else { prom_printf("Inconsistent console: " "input %d, output %d\n", idev, odev); prom_halt(); } if (serial_console) return add_preferred_console("ttyS", serial_console - 1, NULL); return -ENODEV;}console_initcall(set_preferred_console); /* BUFFER is PAGE_SIZE bytes long. */ extern char *sparc_cpu_type;extern char *sparc_fpu_type; extern void smp_info(struct seq_file *);extern void smp_bogo(struct seq_file *);extern void mmu_info(struct seq_file *); unsigned int dcache_parity_tl1_occurred;unsigned int icache_parity_tl1_occurred; static int ncpus_probed; static int show_cpuinfo(struct seq_file *m, void *__unused){ seq_printf(m, "cpu\t\t: %s\n" "fpu\t\t: %s\n" "prom\t\t: %s\n" "type\t\t: %s\n" "ncpus probed\t: %d\n" "ncpus active\t: %d\n" "D$ parity tl1\t: %u\n" "I$ parity tl1\t: %u\n"#ifndef CONFIG_SMP "Cpu0Bogo\t: %lu.%02lu\n" "Cpu0ClkTck\t: %016lx\n"#endif , sparc_cpu_type, sparc_fpu_type, prom_version, ((tlb_type == hypervisor) ? "sun4v" : "sun4u"), ncpus_probed, num_online_cpus(), dcache_parity_tl1_occurred, icache_parity_tl1_occurred#ifndef CONFIG_SMP , cpu_data(0).udelay_val/(500000/HZ), (cpu_data(0).udelay_val/(5000/HZ)) % 100, cpu_data(0).clock_tick#endif );#ifdef CONFIG_SMP smp_bogo(m);#endif mmu_info(m);#ifdef CONFIG_SMP smp_info(m);#endif return 0;} static void *c_start(struct seq_file *m, loff_t *pos){ /* The pointer we are returning is arbitrary, * it just has to be non-NULL and not IS_ERR * in the success case. */ return *pos == 0 ? &c_start : NULL;} static void *c_next(struct seq_file *m, void *v, loff_t *pos){ ++*pos; return c_start(m, pos);} static void c_stop(struct seq_file *m, void *v){} struct seq_operations cpuinfo_op = { .start =c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo,}; extern int stop_a_enabled; void sun_do_break(void){ if (!stop_a_enabled) return; Lines 1–500 of 535. Load more
/* $Id: setup.c,v 1.72 2002/02/09 19:49:30 davem Exp $ * linux/arch/sparc64/kernel/setup.c * * Copyright (C) 1995,1996 David S. Miller (davem@caip.rutgers.edu) * Copyright (C) 1997 Jakub Jelinek (jj@sunsite.mff.cuni.cz) */ #include <linux/errno.h> #include <linux/sched.h> #include <linux/kernel.h> #include <linux/mm.h> #include <linux/stddef.h> #include <linux/unistd.h> #include <linux/ptrace.h> #include <linux/slab.h> #include <asm/smp.h> #include <linux/user.h> #include <linux/a.out.h> #include <linux/screen_info.h> #include <linux/delay.h> #include <linux/fs.h> #include <linux/seq_file.h> #include <linux/syscalls.h> #include <linux/kdev_t.h> #include <linux/major.h> #include <linux/string.h> #include <linux/init.h> #include <linux/inet.h> #include <linux/console.h> #include <linux/root_dev.h> #include <linux/interrupt.h> #include <linux/cpu.h> #include <linux/initrd.h> #include <asm/system.h> #include <asm/io.h> #include <asm/processor.h> #include <asm/oplib.h> #include <asm/page.h> #include <asm/pgtable.h> #include <asm/idprom.h> #include <asm/head.h> #include <asm/starfire.h> #include <asm/mmu_context.h> #include <asm/timer.h> #include <asm/sections.h> #include <asm/setup.h> #include <asm/mmu.h> #ifdef CONFIG_IP_PNP #include <net/ipconfig.h> #endif struct screen_info screen_info = { 0, 0, /* orig-x, orig-y */ 0, /* unused */ 0, /* orig-video-page */ 0, /* orig-video-mode */ 128, /* orig-video-cols */ 0, 0, 0, /* unused, ega_bx, unused */ 54, /* orig-video-lines */ 0, /* orig-video-isVGA */ 16 /* orig-video-points */ }; void (*prom_palette)(int); void (*prom_keyboard)(void); static void prom_console_write(struct console *con, const char *s, unsigned n) { prom_write(s, n); } unsigned int boot_flags = 0; #define BOOTME_DEBUG 0x1 /* Exported for mm/init.c:paging_init. */ unsigned long cmdline_memory_size = 0; static struct console prom_debug_console = { .name = "debug", .write = prom_console_write, .flags = CON_PRINTBUFFER, .index = -1, }; /* XXX Implement this at some point... */ void kernel_enter_debugger(void) { } /* * Process kernel command line switches that are specific to the * SPARC or that require special low-level processing. */ static void __init process_switch(char c) { switch (c) { case 'd': boot_flags |= BOOTME_DEBUG; break; case 's': break; case 'h': prom_printf("boot_flags_init: Halt!\n"); prom_halt(); break; case 'p': /* Use PROM debug console. */ register_console(&prom_debug_console); break; case 'P': /* Force UltraSPARC-III P-Cache on. */ if (tlb_type != cheetah) { printk("BOOT: Ignoring P-Cache force option.\n"); break; } cheetah_pcache_forced_on = 1; add_taint(TAINT_MACHINE_CHECK); cheetah_enable_pcache(); break; default: printk("Unknown boot switch (-%c)\n", c); break; } } static void __init process_console(char *commands) { serial_console = 0; commands += 8; /* Linux-style serial */ if (!strncmp(commands, "ttyS", 4)) serial_console = simple_strtoul(commands + 4, NULL, 10) + 1; else if (!strncmp(commands, "tty", 3)) { char c = *(commands + 3); /* Solaris-style serial */ if (c == 'a' || c == 'b') { serial_console = c - 'a' + 1; prom_printf ("Using /dev/tty%c as console.\n", c); } /* else Linux-style fbcon, not serial */ } #if defined(CONFIG_PROM_CONSOLE) if (!strncmp(commands, "prom", 4)) { char *p; for (p = commands - 8; *p && *p != ' '; p++) *p = ' '; conswitchp = &prom_con; } #endif } static void __init boot_flags_init(char *commands) { while (*commands) { /* Move to the start of the next "argument". */ while (*commands && *commands == ' ') commands++; /* Process any command switches, otherwise skip it. */ if (*commands == '\0') break; if (*commands == '-') { commands++; while (*commands && *commands != ' ') process_switch(*commands++); continue; } if (!strncmp(commands, "console=", 8)) { process_console(commands); } else if (!strncmp(commands, "mem=", 4)) { /* * "mem=XXX[kKmM]" overrides the PROM-reported * memory size. */ cmdline_memory_size = simple_strtoul(commands + 4, &commands, 0); if (*commands == 'K' || *commands == 'k') { cmdline_memory_size <<= 10; commands++; } else if (*commands=='M' || *commands=='m') { cmdline_memory_size <<= 20; commands++; } } while (*commands && *commands != ' ') commands++; } } extern void panic_setup(char *, int *); extern unsigned short root_flags; extern unsigned short root_dev; extern unsigned short ram_flags; #define RAMDISK_IMAGE_START_MASK 0x07FF #define RAMDISK_PROMPT_FLAG 0x8000 #define RAMDISK_LOAD_FLAG 0x4000 extern int root_mountflags; char reboot_command[COMMAND_LINE_SIZE]; static struct pt_regs fake_swapper_regs = { { 0, }, 0, 0, 0, 0 }; void __init per_cpu_patch(void) { struct cpuid_patch_entry *p; unsigned long ver; int is_jbus; if (tlb_type == spitfire && !this_is_starfire) return; is_jbus = 0; if (tlb_type != hypervisor) { __asm__ ("rdpr %%ver, %0" : "=r" (ver)); is_jbus = ((ver >> 32UL) == __JALAPENO_ID || (ver >> 32UL) == __SERRANO_ID); } p = &__cpuid_patch; while (p < &__cpuid_patch_end) { unsigned long addr = p->addr; unsigned int *insns; switch (tlb_type) { case spitfire: insns = &p->starfire[0]; break; case cheetah: case cheetah_plus: if (is_jbus) insns = &p->cheetah_jbus[0]; else insns = &p->cheetah_safari[0]; break; case hypervisor: insns = &p->sun4v[0]; break; default: prom_printf("Unknown cpu type, halting.\n"); prom_halt(); }; *(unsigned int *) (addr + 0) = insns[0]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); *(unsigned int *) (addr + 4) = insns[1]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 4)); *(unsigned int *) (addr + 8) = insns[2]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 8)); *(unsigned int *) (addr + 12) = insns[3]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 12)); p++; } } void __init sun4v_patch(void) { struct sun4v_1insn_patch_entry *p1; struct sun4v_2insn_patch_entry *p2; if (tlb_type != hypervisor) return; p1 = &__sun4v_1insn_patch; while (p1 < &__sun4v_1insn_patch_end) { unsigned long addr = p1->addr; *(unsigned int *) (addr + 0) = p1->insn; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); p1++; } p2 = &__sun4v_2insn_patch; while (p2 < &__sun4v_2insn_patch_end) { unsigned long addr = p2->addr; *(unsigned int *) (addr + 0) = p2->insns[0]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 0)); *(unsigned int *) (addr + 4) = p2->insns[1]; wmb(); __asm__ __volatile__("flush %0" : : "r" (addr + 4)); p2++; } } #ifdef CONFIG_SMP void __init boot_cpu_id_too_large(int cpu) { prom_printf("Serious problem, boot cpu id (%d) >= NR_CPUS (%d)\n", cpu, NR_CPUS); prom_halt(); } #endif void __init setup_arch(char **cmdline_p) { /* Initialize PROM console and command line. */ *cmdline_p = prom_getbootargs(); strcpy(boot_command_line, *cmdline_p); if (tlb_type == hypervisor) printk("ARCH: SUN4V\n"); else printk("ARCH: SUN4U\n"); #ifdef CONFIG_DUMMY_CONSOLE conswitchp = &dummy_con; #elif defined(CONFIG_PROM_CONSOLE) conswitchp = &prom_con; #endif boot_flags_init(*cmdline_p); idprom_init(); if (!root_flags) root_mountflags &= ~MS_RDONLY; ROOT_DEV = old_decode_dev(root_dev); #ifdef CONFIG_BLK_DEV_RAM rd_image_start = ram_flags & RAMDISK_IMAGE_START_MASK; rd_prompt = ((ram_flags & RAMDISK_PROMPT_FLAG) != 0); rd_doload = ((ram_flags & RAMDISK_LOAD_FLAG) != 0); #endif task_thread_info(&init_task)->kregs = &fake_swapper_regs; #ifdef CONFIG_IP_PNP if (!ic_set_manually) { int chosen = prom_finddevice ("/chosen"); u32 cl, sv, gw; cl = prom_getintdefault (chosen, "client-ip", 0); sv = prom_getintdefault (chosen, "server-ip", 0); gw = prom_getintdefault (chosen, "gateway-ip", 0); if (cl && sv) { ic_myaddr = cl; ic_servaddr = sv; if (gw) ic_gateway = gw; #if defined(CONFIG_IP_PNP_BOOTP) || defined(CONFIG_IP_PNP_RARP) ic_proto_enabled = 0; #endif } } #endif /* Get boot processor trap_block[] setup. */ init_cur_cpu_trap(current_thread_info()); paging_init(); smp_setup_cpu_possible_map(); } static int __init set_preferred_console(void) { int idev, odev; /* The user has requested a console so this is already set up. */ if (serial_console >= 0) return -EBUSY; idev = prom_query_input_device(); odev = prom_query_output_device(); if (idev == PROMDEV_IKBD && odev == PROMDEV_OSCREEN) { serial_console = 0; } else if (idev == PROMDEV_ITTYA && odev == PROMDEV_OTTYA) { serial_console = 1; } else if (idev == PROMDEV_ITTYB && odev == PROMDEV_OTTYB) { serial_console = 2; } else if (idev == PROMDEV_IRSC && odev == PROMDEV_ORSC) { serial_console = 3; } else if (idev == PROMDEV_IVCONS && odev == PROMDEV_OVCONS) { /* sunhv_console_init() doesn't check the serial_console * value anyways... */ serial_console = 4; return add_preferred_console("ttyHV", 0, NULL); } else { prom_printf("Inconsistent console: " "input %d, output %d\n", idev, odev); prom_halt(); } if (serial_console) return add_preferred_console("ttyS", serial_console - 1, NULL); return -ENODEV; } console_initcall(set_preferred_console); /* BUFFER is PAGE_SIZE bytes long. */ extern char *sparc_cpu_type; extern char *sparc_fpu_type; extern void smp_info(struct seq_file *); extern void smp_bogo(struct seq_file *); extern void mmu_info(struct seq_file *); unsigned int dcache_parity_tl1_occurred; unsigned int icache_parity_tl1_occurred; static int ncpus_probed; static int show_cpuinfo(struct seq_file *m, void *__unused) { seq_printf(m, "cpu\t\t: %s\n" "fpu\t\t: %s\n" "prom\t\t: %s\n" "type\t\t: %s\n" "ncpus probed\t: %d\n" "ncpus active\t: %d\n" "D$ parity tl1\t: %u\n" "I$ parity tl1\t: %u\n" #ifndef CONFIG_SMP "Cpu0Bogo\t: %lu.%02lu\n" "Cpu0ClkTck\t: %016lx\n" #endif , sparc_cpu_type, sparc_fpu_type, prom_version, ((tlb_type == hypervisor) ? "sun4v" : "sun4u"), ncpus_probed, num_online_cpus(), dcache_parity_tl1_occurred, icache_parity_tl1_occurred #ifndef CONFIG_SMP , cpu_data(0).udelay_val/(500000/HZ), (cpu_data(0).udelay_val/(5000/HZ)) % 100, cpu_data(0).clock_tick #endif ); #ifdef CONFIG_SMP smp_bogo(m); #endif mmu_info(m); #ifdef CONFIG_SMP smp_info(m); #endif return 0; } static void *c_start(struct seq_file *m, loff_t *pos) { /* The pointer we are returning is arbitrary, * it just has to be non-NULL and not IS_ERR * in the success case. */ return *pos == 0 ? &c_start : NULL; } static void *c_next(struct seq_file *m, void *v, loff_t *pos) { ++*pos; return c_start(m, pos); } static void c_stop(struct seq_file *m, void *v) { } struct seq_operations cpuinfo_op = { .start =c_start, .next = c_next, .stop = c_stop, .show = show_cpuinfo, }; extern int stop_a_enabled; void sun_do_break(void) { if (!stop_a_enabled) return;